// most types should be added via the ShaderType.* functions.
// this function is used to ensure the shader type belongs to this container
internal FoundryHandle AddShaderType(ShaderType shaderType, bool convertNonexistantToVoid)
{
if (shaderType.Exists)
{
if (shaderType.Container == this)
{
return(shaderType.handle);
}
else
{
// TODO: have to deep copy the definition from another container
return(FoundryHandle.Invalid());
}
}
else
{
// invalid shader type...
if (convertNonexistantToVoid)
{
return(ShaderTypeInternal.Void(this));
}
else
{
return(FoundryHandle.Invalid());
}
}
}
IEnumerable <BlockVariable> GetVariableEnumerable(FoundryHandle listHandle)
{
var localContainer = Container;
var list = new FixedHandleListInternal(listHandle);
return(list.Select <BlockVariable>(localContainer, (handle) => (new BlockVariable(localContainer, handle))));
}
IEnumerable <TemplatePassStageElement> GetStageElements(FoundryHandle stageElementListHandle)
{
var localContainer = Container;
var list = new FixedHandleListInternal(stageElementListHandle);
return(list.Select(localContainer, (handle) => (new TemplatePassStageElement(localContainer, handle))));
}
internal Builder(ShaderContainer container, string name, ShaderType returnType, ShaderFoundry.Block.Builder parentBlockBuilder)
{
this.container = container;
this.name = name;
this.returnType = returnType;
functionHandle = container.CreateFunctionInternal();
this.parentBlockBuilder = parentBlockBuilder;
}
internal Builder(ShaderContainer container, string name, FoundryHandle passParentHandle, FoundryHandle templateParentHandle)
{
this.container = container;
this.name = name;
this.passParentHandle = passParentHandle;
this.templateParentHandle = templateParentHandle;
blockHandle = container.CreateBlockInternal();
}
internal ITemplateLinker GetTemplateLinker(FoundryHandle linkerHandle)
{
if (linkerHandle.IsValid && (linkerHandle.Handle < m_TemplateLinkers.Count))
{
return(m_TemplateLinkers[(int)linkerHandle.Handle]);
}
return(null);
}
void ProcessToken(string str, int startOffsetInclusive, int endOffsetExclusive, ShaderContainer container)
{
int length = endOffsetExclusive - startOffsetInclusive;
if (length <= 2)
{
return; // can't possibly be a valid token
}
// Special tokens are used to done ids that are to be replaced with actual identifiers later:
// - "$T:{id}$": Replaces the string with the type name with the given id.
// - "$F:{id}$": Replaces the string with the function name with the given id.
// - "$V:{id},{varName}$": Replaces the string with the variable declaration with the given id.
// Variable declarations also need the variable name due to how arrays have to be declared: "type name[size]".
// This may go away if we ever add a variable instance object.
int offset = startOffsetInclusive;
switch (str[offset])
{
case 'V': // variable declaration
{
ParseTokenWithName(str, startOffsetInclusive, endOffsetExclusive, 'V', out int shaderTypeIndex, out string varName);
// declare it!
FoundryHandle shaderTypeHandle = new FoundryHandle();
shaderTypeHandle.Handle = (uint)shaderTypeIndex;
var shaderType = new ShaderType(container, shaderTypeHandle);
VariableDeclarationInternal(shaderType, varName, DeclarationMode.NoSemicolon);
break;
}
case 'F': // function call - function name
{
int tokenId = ParseSimpleToken(str, startOffsetInclusive, endOffsetExclusive, 'F');
FoundryHandle shaderFunctionHandle = new FoundryHandle();
shaderFunctionHandle.Handle = (uint)tokenId;
var shaderFunction = new ShaderFunction(container, shaderFunctionHandle);
AddFunctionNameInternal(shaderFunction);
break;
}
case 'T': // type name
{
int typeId = ParseSimpleToken(str, startOffsetInclusive, endOffsetExclusive, 'T');
FoundryHandle shaderTypeHandle = new FoundryHandle();
shaderTypeHandle.Handle = (uint)typeId;
var shaderType = new ShaderType(container, shaderTypeHandle);
AddNonArrayTypeNameInternal(shaderType);
break;
}
default:
{
var tokenSubStr = str.Substring(startOffsetInclusive, endOffsetExclusive - startOffsetInclusive);
throw new Exception($"Malformed token found when parsing '{tokenSubStr}'. Identifier {str[offset]} was unexpected.");
}
}
}
public static FoundryHandle Build(ShaderContainer container, List <FoundryHandle> values)
{
if ((values == null) || (values.Count <= 0))
{
return(FoundryHandle.Invalid());
}
var listHandle = container.AddHandleBlob((uint)values.Count);
for (var i = 0; i < values.Count; ++i)
{
container.SetHandleBlobElement(listHandle, (uint)i, values[i]);
}
return(listHandle);
}
public static FoundryHandle Build <T>(ShaderContainer container, List <T> items, Func <T, FoundryHandle> indexFunc)
{
if ((items == null) || (items.Count <= 0))
{
return(FoundryHandle.Invalid());
}
var listHandle = container.AddHandleBlob((uint)items.Count);
for (var i = 0; i < items.Count; ++i)
{
container.SetHandleBlobElement(listHandle, (uint)i, indexFunc(items[i]));
}
return(listHandle);
}
// only for use by the Builder
ShaderFunction(ShaderContainer container, FoundryHandle functionHandle, string name, string body, FoundryHandle returnTypeHandle, List <FunctionParameter> parameters, FoundryHandle parentBlockHandle)
{
this.container = container;
if (container != null)
{
FoundryHandle parametersList = FixedHandleListInternal.Build(container, parameters, (p) => (p.handle));
handle = functionHandle;
container.SetFunction(functionHandle, name, body, returnTypeHandle, parametersList, parentBlockHandle);
function = container.GetFunction(handle);
return;
}
// failure
this = Invalid;
}
public ShaderFunction Build()
{
if (finalized)
{
return(new ShaderFunction(Container, functionHandle));
}
finalized = true;
FoundryHandle parentBlockHandle = parentBlockBuilder?.blockHandle ?? FoundryHandle.Invalid();
var returnTypeHandle = container.AddShaderType(returnType, true);
var builtFunction = new ShaderFunction(container, functionHandle, name, ConvertToString(), returnTypeHandle, parameters, parentBlockHandle);
if (parentBlockBuilder != null)
{
// Register the new function with the parent block
parentBlockBuilder.AddFunction(builtFunction);
}
return(builtFunction);
}
internal FoundryHandle AddTemplateLinker(ITemplateLinker linker)
{
// If the linker is either null, or has already been added, we return an invalid handle
if (linker == null)
{
throw new Exception("Registering a null template linker is not valid.");
}
var existingLinkerIndex = m_TemplateLinkers.FindIndex((l) => (l == linker));
if (existingLinkerIndex != -1)
{
throw new Exception($"Template linker '{linker}' has already been registered.");
}
FoundryHandle handle = new FoundryHandle();
handle.Handle = (uint)m_TemplateLinkers.Count;
m_TemplateLinkers.Add(linker);
return(handle);
}
internal extern PragmaDescriptorInternal GetPragmaDescriptor(FoundryHandle pragmaDescriptorHandle);
// private
internal TemplateInstance(ShaderContainer container, FoundryHandle handle)
{
this.container = container;
this.handle = handle;
this.templateInstance = container?.GetTemplateInstance(handle) ?? TemplateInstanceInternal.Invalid();
}
public bool Equals(FoundryHandle other) => this.ReferenceEquals(other);
internal bool ReferenceEquals(FoundryHandle other)
{
return(m_Handle == other.m_Handle);
}
// private
internal CustomizationPoint(ShaderContainer container, FoundryHandle handle)
{
this.container = container;
this.handle = handle;
this.customizationPoint = container?.GetCustomizationPoint(handle) ?? CustomizationPointInternal.Invalid();
}
internal extern FunctionParameterInternal GetFunctionParameter(FoundryHandle functionParameterHandle);
internal extern CommandDescriptorInternal GetCommandDescriptor(FoundryHandle commandDescriptorHandle);
internal extern ShaderFunctionInternal GetFunction(FoundryHandle functionHandle);
internal extern FoundryHandle AddFunctionParameter(string name, FoundryHandle typeHandle, UInt32 flags);
internal extern DefineDescriptorInternal GetDefineDescriptor(FoundryHandle defineDescriptorHandle);
// private
internal StructField(ShaderContainer container, FoundryHandle handle)
{
this.container = container;
this.handle = handle;
this.field = container?.GetStructField(handle) ?? StructFieldInternal.Invalid();
}
// private
internal TemplatePass(ShaderContainer container, FoundryHandle handle)
{
this.container = container;
this.handle = handle;
this.templatePass = container?.GetTemplatePass(handle) ?? TemplatePassInternal.Invalid();
}
internal extern KeywordDescriptorInternal GetKeywordDescriptor(FoundryHandle keywordDescriptorHandle);
internal extern IncludeDescriptorInternal GetIncludeDescriptor(FoundryHandle includeDescriptorHandle);
internal extern static bool ValueEquals(ShaderContainer aContainer, FoundryHandle aHandle, ShaderContainer bContainer, FoundryHandle bHandle);
internal extern TagDescriptorInternal GetTagDescriptor(FoundryHandle tagDescriptorHandle);
// private
internal TagDescriptor(ShaderContainer container, FoundryHandle handle)
{
this.container = container;
this.handle = handle;
this.descriptor = container?.GetTagDescriptor(handle) ?? TagDescriptorInternal.Invalid();
}
internal extern bool SetFunction(FoundryHandle functionHandle, string name, string body, FoundryHandle returnTypeHandle, FoundryHandle parameterListHandle, FoundryHandle parentBlockHandle);
